Are you thinking of Scooter Libby? I don't think Miller would fall on her sword to protect one of Cheney's guy.
Hell, it could have been Plame. The media already knew she worked for the CIA.
Yeah, Miller would do that. I still think it's more likely though that when they finally get the notes, the notes will say that some low level Bozo told her--maybe the janitor, and everyone will then realize that the story was ghost written by Jayson Blair.
You know, the more I think about it, the more I think they are going soft on her. Why don't they just bust into her office and seize the notes? I'm sure they could get a warrant.